Key-lock for key-operated machines.



MTT "s1, 1908,

L. G. JULIEN. KEY LOCK ma' KEY OPERATED MACHINES.

APPLIOATION FILED APB.. 3. W07.

ZSHEETSA-SHEET L 3,645. PATENTBD MAR. 31, 1908.

L. G. JULHN. FOR KEY OPERATED M AGHNES.

KEY LOGK APPLICATION FILED APR. 3. 19D?.

' 2 SHEBTSSBBET 2.

Law wuwrzoff,

UNITED 'STATES rATENT OFFICE.

OF COLUM'IA, ASSIGNOR TO ELLlOTT-FISBER Louis c. JULIEN, OF WASHINGTON; DISTRICT A CORPORATION or DELAWARE.

COMPANY, OF NEW YORK, N. Y.,

KEY-LOCK FOR KEYeOPERATED MACHINES.

No. 883,645. specification of Letters Patent. Patented March ai, 190e.` Y'

Application led April 3, 1907. Serial No. 366,210.

To all whom it may concern:

to which my invention is shownrapplied.

proper key is continued. T at-is -tosay, if

Beit known that LLOUIS G.JUL1HN,aciti lt is only necessary to call attention to the 55 zen ofthe United States, residing at Washfact that it includes a series of'keys 1 which ington, in the District of Columbia, have inoperate printing mechanism .Z'and a comput- 5 vented a new and useful Key-Lock for Keying mec ianism 3, the operating connections Operated Machines, of which the following betweenthe kevs and the computing n'i'echanis a specification. ism including levers 4 from the front en d of 60 Thls invention relates to key -operated which depend linkse 'connected to thekey machines, and more particularly to means stems bysuitableineans indicated at` Y6M. 10 for preventing the simultaneous depression The connection between the keys and links of two adjacent keys. is, such that they move in unison, and'lthere- In t ewriting, adding and other keyfore, in the present embodiment of the in.- 65 operate machines a possibility ofl error vention, vl control the Operation of the keys arises from the fact thattwo adjacentA keys by associating detente, orhlocking devices,

may be inadvertently. struck and depressed to .be describedwith the links 5. 1. simultaneously. It 'has therefore been pro- The levers 4 extend through and are' guided posed to rovide such machines With means by a plate 6. This late therefore affords 70 which wi prevent the simultaneous depresconvenient support or a series of staruwhe'el's sion of adjacent keys7 but will permit the or rotarydetents'or key lockingldevice'sf? keys to be operated singly.' Those key rotatably mounted upon the frontfaceo'f thev locking devices with which am familiar are late 6, as for instance by screw studs' 8, eX- object1onable, however, in that they pretended throughthe plate Gand secured in 75 vent the Operation of the. machine at high' place by nuts' 9,'as shown in Fig. 3.' `The speed, because upon the initial depression lstar Wheels 7 alternate with the'links and of ono key, the adjacent keys are locked eachwheelcoperates with lateral projections i Aand snch'adjacent keys remain locked until 10 on the adjacentside faces of the-tweeentheir -release is effected by the complete re- .tiguousv links. Normally,` the two 'irojec'n 80 traction of the key Which has been operated. tions 10 are disposed as shown attlj ft The-object of my invention is to produce a hand end of Fig.' 2`, that is to'say, the projec' mechanism which, While' preventing the tions are disposed above oppositely di'sj'iose'd. simultaneous.. depressioni of adjacent ke s7 teeth of the wheel 7 so that, if the two links will nevertheless permit the 'operation ci a are .simultaneously depressed, the-projections 85 key immediately adjacent to the one oper- 10 thereon Will strike the teeth of the rotary ated, while the operated key is moving back detent or wheel and will 'be held against to its normal position. further simultaneous movement b'yreason of Subordinate. objects will appear as the dethe fact that the detent-cannot rotate in both scription of the ilustrated 'structure is. dedirections at the same time. This operation 90 veloped. l of the detent to arrest the', simultaneously 'In the. accompanying drawings-Figu're depressed links ,will be made clear by refer' 40 1 is a sectional elevation of an Elllottence to the links marked c and l), which are Fisher billin machine equipped with my shown in 2 sui'liciently depressed to bring invention. ig: 42;. is a" sectional view the projectionsl() into contact with the de- 95 through `the top ofthe carria `e and shoWi tent. It will thus be seen that after lslight a lseriesof key-operated mein ers associate simultaneous' depression ,of adjacent., keys,

45 with aseries o f devices which prevent the' they will both be arrested by one of--thc de-A simultaneous operation of adjacent keys. tentsand will thus be lockcdaganst further Figis anenlarged section on the line 3--3 of simultaneous movement. Itis unnecessary, 100 Fig 2. Fig. 4.1s a section on the line 4 4 however, to crmit both keys to return to of ig. 3, and Eig. 'v5 is an eletationof a plunormal positlon.' The appropriate key can rality of key-operated members and a plube operated, because,v if the key improperly rality of modified key locking devices. struck is released, it will yield yto permit the AFor the purposes of this disclosure', it is detent to rotateas the-de ression- 'of the 105 unnecessary to describe in detail the machine one of the two keys whichare locked bya detent is released, the other may continue its downward movement, since such movement will be permittedby the rotation of the detent. If a single key is'depressed, seeglink c, F' 2, the projections thereon willz'cn age the teeth of the adjacent detents and Wil merely rotate the latter in opposite directions, the locking means opposing no appreciable resistance to this normal operation of the key. It will be understood in this connection why the iprojections 10 are normally located sligh y above the underlying teeth of the detents, since it will a pear 'that Whena link, as

jacent links at opposite sides thereof must be sufficiently elevatedt'o permit the teeth of the detents to clear the projections as the "rotation of the detents wouldV otherwise be 2Q blocked, and the link c would be arrested before its complete depression.

Whena link has been completely de ressed, i toccupies the dotted positlon ofthe ink c in Fig. 2, it being noted that the projections 10 V sllp'iafheelsr *It Willjnow be evident that as 'nk c". rises, the adjacent sides of star n* *fe engaged by 4its ins, will move 'u wardly. he remote si es of the Wheels will ,riitd movement wi be in the irection of depression of the adjacent keys, and therefore, as the link c rises, either ,of the adjacent links may be depressed. In fine, esince the opposite sides of4 a/star Wheel located between ladjacentf links or' key-operatedV members move in opposite directions, the links may -likewise'move simultaneously in opposite Vdirections so that one may be depressed,

', 40while xthe other is'returning fromits stroke.

A that in any position Which'nlay'b assumed byloosely mounted detents they will be effective to accomplish their purpose. ForV instance, if the two teeth of a given star Wheel,

' 'which underl' the adjacent pins or projecl tions 10, are notspaced the same distan-ce below said projections, it is immaterial, be`

cause if the two keys are depressed, the pin which is nearest a'tooth will strike the same and thus rotate the detent so that the tooth at the opposite side of the detent' lwill move up, Whi lthe rejection on the adjacent k ismoving own. Thus, 'in' any event, the two adjacent links will be arrested at a predeterminedpoint, regardless of the initial I position of the star Wheel. It may, never for instance the lin c; is depressed, the ad desired to e onsaid 4li'hk are below the teeth of the adjacent theless, be desirable to insure a given normal position ofthe wheels, and I have therefore shown a simple arrangement .Whereb this end may be attained. As shown in igs. 3 and 4, each star Wheel 7 is provided with a hubll formed with eripheral'concavities or dwells 12 correspon ing in number and position with the interdentalI spaces of the stare hub is a s ring thus serves to locate the star Wheel and yieldin retain the same in its located osition.

star wheels with an even number of equidis- ,tant teeth, as shown in Fi 4. 2, this is not csf sential, as each of said W eels may be provided with an uneven or odd 'number of teeth, as shown in Fig. 5, and this, arrangement may perhaps be preferable when it is positionin devices for the wheels. of course, e evident that While l have shown the detents associated With the links 5, since this is a desirable location in the particular machine illustrated, it is, nevertheless, possible to associate vthese wheels or detents with the key stems, key levers or any other parts of the key-operated mechanism, or

1n fact the keysi themselves may directly colperate with the detents, although this.

per aps would be undesirable unlessv provision were made for preventin the detents from extending above the leve of the key to is.

1It is thought Vthat from the foregoing, the construction, operation and advantages of my key locking means will be clearly comprelrended, but I Wishto be distinctly under* stood as reservingthe right to effect such changes, modifications, and variations of the l lliile .it is perhaps preferable to orm the minato the' use of the locating or t 'It Awill,

los

illustrated structure as may come fairly Within the scope of theprotection prayed.

What I claim is y 1. The combination with two keys and mechanism operated thereb r., of means preventing the slimlltaneous el ective operation of said keys and permittilv the normal effective operation of either ey at -any time during the retraction of the other key.-

2. The combination with two keys, of mechanism operated thereby, each of said keys being ca able of effective normal operatlon during tlie iinal portion of the effective stroke of thc other key and' also at an time during the retractile movement ofsai( other key, and inoans'preventing the simultaneous operation of said keys and permitting the normal effect-ive operation of veither key during the final portion of the effective stroke of the other key of at any time during the lee4 mechanism operated thereby, each of said .keys being capable of effective normal opern multaneous effective movement of the keys and to yield 4to permit the normal eifective o eration of either key prior to the operation oi the other key or during any portion of the yretractile movement of the latter.

4. The combination. Vith two keys, of mechanism operated thereby, each key being` capable oi. eiicctive normal operation during the retraction of the other key, a rotary de".

tent, 'devices movable with the respective keys and arranged to engage the detent at o posite sides of the axis thereof toobstnict t e simultaneous effective movement of the keys and to rotate the detent uponV the operation of either key alone.

5. The combination with two keys, of mechanism operated thereby, each of said keys being capable of effective normal operation at any tune during the retraction of the other key, an interposed toothed wheel obstructing the simultaneous effective moveinent of both keys, but rotatable to permit the effectiveV operation of either key alone, said. toothed Wheel opposing no substantial resistance to the operation of one key either prior to the operation of the other key or during the retraction of said other key and opposing no substantial resistance to the complete retraction of such other key.

L'/6. The combination with two keys and a single rojection,movable with nach key, oi' a vtoot ied wheel engaged at thc opposite sides of its axis by said projection u on the initial simultaneous movement of tie keys to prevent simultaneous effective n'ioveinei'it thereof, said wheel being rotatable by either projection upon the operation of either key alone and disengaged from the proiection of the operated key duringy the final portion of the eifective stroke of said. key.

7. In a key-operated machine, two keys, and mechanism operated thereby, each of said keys being capable or effective normal. o eration beginning duringv the linal portion oi) the effective movement ofeanother key or during;r the retraction of said other key, and means preventing the simultaneous eil'eeiive operation of said keys and permitting the normal effective operation of one key pro vided said normal effective operation of the key last named is inaugurated during the final portion of the effective movement of the other key or during''the retractnm thereof.u

8. The combination fix/ith two k ys, and mechanism operatedl thereby, each of said keys being capable oi' an eifecti'r'e normal operation beginning during the final poi-tion of the effective movement of the other key or during the retraction thereof, and moans preventing the simultaneous effective opera vtion of said keys and permitting a normal operation of either key, beginning during the final portion of the effective movement of the other key or duringr the retraction thereof. v

Q. The combination with two keys and mechanism operated thereby, of a rotary detent o( peratin,g` with said keys to prevent the normal simultaneous operation thereof and rotatalile to permit effective operation of either key alone, said detent being disenga-ged from the operated key during the "hnal portion oi the e'flctive stroke of the latter, wherel'iy lsaid detent is left free to be rotated by the other key in order to permit an eliiective movement of thel other key to be begun during the final portion of the effective stroke of "the key :first operated.

10. Ina key-operated machine, the combination with. a )air of keys and the mechanism operated t ereby, of a rotary detent separat-e and distinct from said mechanism, and means operated by the keys and coacting with the detent at opposite sides of the axis thereof to detain the keys when simultanee ously struck and to idly rotate the detent in one direction or the other when a single key is operated, the co-action of said means and the detent terminating prior to the completion of the effective stroke of the operated key.

11. in a key operated machine, a rotary detent and two keys detained thereby when simultaneously struck, said detent being rotatable in opposite directions by the respective keys w ien operated one at' a time and having no coaction with the operated key during the linal portion of its effected stroke.

l2. ln a keyhoperated machine, a rotary detent, two keys iletaineol thereby when simultaneously struck, said detent permitting the operation of either key prior to the operation of the other key, o1' at any time during' the retraction of said other key, said dctent being incapable oi assuming a position in which the same will prevent the proper operation of the keys.

13. ln a key-operated machine, two keys,

. a rotary detent having teeth extending around its entire periphery, and a single projection movable with each key, said prow ieetion engaging the teeth at opposite sides of the detent and such engagement occurringl only during the intermediate portion of the key stroke, whereby the detent and the operated key are out of coaction during the initial and final portions of the effective key stroke, substantially and Yfor the purpose speeilied. f

le. ln a key-operated machine, a pair of keys, an interposed star "wheel mounted idly and serving' the sole function of a .de/tent, a pair of lmy-opinated projections cooperating with the star wheel at opposite sides of the axis thereof, and a' locatingt device' yieldingly retaining the star Wheel in any one of Vseveralfl' predetermined positions tol insure at all times the roper location of the teeth of said wheel Witll) respeet to the projections. v

15,. The combination with a series of ke operated members each having op osite y4 s projections and afseries'o rotary. with said mem-- lbers yand, coasting `witl1-t .e'projections of be prevented.

16.` In a key-operated machine,a air of keys, a\ single projection movable wit eachl key, and a member movable about an axis, said projections being mounted to engage the member at opposite sides of the axis thereof to prevent complete' simultaneous 4operation of the keys or `to move the member locating and detaining t in either ldirection out of obstructing relation 20 to either ke operated alone.

17. In a ey-operated machine, a airof keys, a rotary detent common to sai keys, and locatin means for the detent.

18. In a: keys, and means plreventing the simultaneous operation of bot lkeys and permitting the operation of either. key, said means including a toothed Wheel, and "ieldng means for e Wheel.

In testimon as my own, I ave hereto aiixed my signature 1n the presenee of two Witnesses.

Witnesses:

\ JOHN H. Siemens,V

BLANCHE J KALDENBACK.

ey-operated machine, a' pair of that I claim the foregoing LoUIs e.''JULIHiity f- 

